why do toys for tots and hasbro trust duracell to power their donated toys? duralock power preserve. it locks in power for up to 10 years in storage. guaranteed. duracell with duralock. trusted everywhere. ♪ >>> that is very nice and calming. >> very zen music. finally this hour, the cow face pose, and the ever popular downward facing dog. if you're just joining us, no, i'm not talking about shia labeouf. we're talking about yoga. >> h's interesting about this is the newest group doing it more and more is also the youngest. here's a look. >> reporter: some say yoga is the fastest growing sport in the nation, with an estimated 20 million people practicing regularly. the latest trend is an ever growing number are pint-sized. there are yoga classes for infants up to teenagers. there are even classes for toddlers like my daughter. >> you're still going to see the foundations of yoga, so there's going to be an awareness of movement and anatomy and breath. there's such a tremendous amount of creativity and there's inner play between the children and teacher. >> r